[PATCH (resend)] ui-stats.c: fix warning on 32-bit

[Eric Wong]

gcc 6.3.0-18 on Debian oldstable emits the following warning,
despite uintptr_t and "unsigned long" having the same size:

> ../ui-stats.c: In function ‘print_authors’:
> ../ui-stats.c:340:18: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 2 has type ‘unsigned int’ [-Wformat=]
>      htmlf("<td>%lu</td>", (uintptr_t)date->util);
>                   ^

Signed-off-by: Eric Wong <e at 80x24.org>
---
 ui-stats.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ui-stats.c b/ui-stats.c
index 09b3625..ad22dae 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -337,8 +337,10 @@ static void print_authors(struct string_list *authors, int top,
 			if (!date)
 				html("<td>0</td>");
 			else {
-				htmlf("<td>%lu</td>", (uintptr_t)date->util);
-				total += (uintptr_t)date->util;
+				uintptr_t util = (uintptr_t)date->util;
+
+				htmlf("<td>%"PRIuPTR"</td>", util);
+				total += util;
 			}
 		}
 		htmlf("<td class='sum'>%ld</td></tr>", total);